techzeero

/* 
   Arduino String Manipulation
   For more details, visit: https://techzeero.com/arduino-tutorials/arduino-string-functionality/
*/

void setup() {
   char my_str[] = "I love arduino and programming"; // create a string
   Serial.begin(9600);
  
   // (1) print the string

techzeero

/* 
   Arduino String Functionality
   For more details, visit: https://techzeero.com/arduino-tutorials/arduino-string-functionality/
*/

void setup() {
   char my_str[] = "Hello";
   Serial.begin(9600);
   Serial.println(my_str);
}

techzeero

/* 
   Arduino String Functionality
   For more details, visit: https://techzeero.com/arduino-tutorials/arduino-string-functionality/
*/

void setup() {
   char my_str[6]; // an array of 5 character string
   Serial.begin(9600);
   my_str[0] = 'H';
   my_str[1] = 'e';

techzeero

/* 
   Relay with Arduino and LDR
   For more details, visit: 
*/

int sensorPin = A0;
int relayPin = 9;

void setup() 
{

techzeero

/* 
   IR Receiver Control Signals Through Arduino
   For more details, visit: https://techzeero.com/arduino-tutorials/control-tv-with-an-arduino/
*/

#include<IRremote.h>  //IR remote control library

const int numberOfKeys = 5;
int firstKey = 4; //first pin of the 5 sequential pins connected to buttons
boolean buttonState[numberOfKeys];

techzeero

/*
   Scrolling Text on LCD 16x2
   For more details, visit: https://techzeero.com/arduino-tutorials/how-to-use-an-lcd-display-with-arduino/ 
*/

#include<LiquidCrystal.h>

LiquidCrystal lcd(12,11,5,4,3,2);
int numRows = 2;
int numCols = 16;

techzeero

/*
   Turning the Cursor and Display On or Off
   For more details, visit: https://techzeero.com/arduino-tutorials/how-to-use-an-lcd-display-with-arduino/ 
*/

#include<LiquidCrystal.h>

LiquidCrystal lcd(12,11,5,4,3,2);

void setup()

techzeero

/*
      Display Double-Height Characters on 16×2 LCD
      For more details, visit: https://techzeero.com/arduino-tutorials/custom-characters-on-16x2-lcd/
*/

#include<LiquidCrystal.h>

LiquidCrystal lcd(12,11,5,4,3,2);

byte glyphs[5][8]={

techzeero

/*
      Display Custom Characters on 16×2 LCD
      For more details, visit: https://techzeero.com/arduino-tutorials/custom-characters-on-16x2-lcd/
*/

#include<LiquidCrystal.h>

LiquidCrystal lcd(12,11,5,4,3,2);

byte smile[8] = {0b00000,0b01010,0b00000,0b00000,0b10001,0b01110,0b00000,0b00000};

techzeero

/*
      DS3231 RTC and LCD with Arduino
      For more details, visit: https://techzeero.com/arduino-tutorials/ds3231-rtc-with-arduino-arduino-real-time-clock/
*/

#include <DS3231.h>
#include <LiquidCrystal.h> // includes the LiquidCrystal Library 

DS3231  rtc(SDA, SCL);